Question

Diode and resistance are connected as shown in figure. Out of the following statements which one is TRUE?

Options

• Diode D₁ and diode D₂ both are forward biased.

• Diode D₁ and diode D₂ both are reverse biased.

• Diode D₁ is forward biased and diode D₂ is reverse biased.

• Diode D₁ is reverse biased and diode D₂ is forward biased.

Answer 1

Diode D₁ is forward biased and diode D₂ is reverse biased.

Explanation:

Biasing Rule: A diode is forward-biased if the P-side (anode) potential is higher than the N-side (cathode) potential (V_p > V_n).

Fig. (1): The P-side is at 0 V, and the N-side is toward −4 V. Since 0 V > −4 V, D₁ is forward-biased.

Fig. (2): The P-side is at −5 V, and the N-side is toward −3 V. Since −5 V < −3 V, D₂ is reverse-biased.